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Ureters

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Related Experiment Video

Updated: Jun 20, 2026

Transmesenteric Laparoscopic Pyeloplasty in Trendelenburg Position for Horseshoe Kidney with Hydronephrosis

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Giant obstructive megaureter causing contralateral ureteral obstruction and hydronephrosis: a first-time report.

Nikhil Khattar¹, Lalgudi N Dorairajan, Santosh Kumar

¹Department of Urology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.

|August 18, 2009

Summary

A rare "giant megaureter" caused ureter compression in a teen girl. This case highlights unusual kidney obstruction and its clinical significance.

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A Murine Model of Irreversible and Reversible Unilateral Ureteric Obstruction

A Murine Model of Irreversible and Reversible Unilateral Ureteric Obstruction

Published on: December 20, 2014

Area of Science:

Urology
Pediatric Nephrology
Medical Imaging

Background:

Congenital pelviureteric junction obstruction is a common cause of ureteral compression.
Giant hydronephrotic kidneys can rarely cause extrinsic ureteral compression.

Observation:

A 15-year-old female presented with a unique case of a "giant megaureter."
This condition led to symptomatic compression of the contralateral ureter.

Findings:

The giant megaureter caused extrinsic compression on the opposite ureter.
This presentation is distinct from previously reported cases of ureteral compression due to hydronephrosis.

Implications:

Discusses the etiology and differential diagnosis of giant megaureters.
Highlights the importance of considering rare causes of ureteral obstruction in pediatric patients.